BELGIUM. Banque Nationale de Belgique. 50 Francs-10 Belgas, 1927-28. P-100. PMG Choice Uncirculated 64. A very sought after Banque Nationale design. This 50 Francs/10 Belgas is available as a rare uncirculated example. This is by far the finest graded issued example by PMG with the closest being a lower AU 53 example.